| ITF Portugal F14 | 2018/08/05 07:00 | Alexander Donski v Afonso Salgado | 2-6,7-6,6-0 |
| ITF Portugal F11 Qual | 2018/07/03 08:30 | Socrates Leon Tsoronis v Alexander Donski | 6-3,6-3 |
| ITF Portugal F11 Qual | 2018/07/02 11:00 | Fernando Andre v Alexander Donski | 2-6,3-6 |
| ITF Portugal F10 | 2018/06/28 16:05 | Alexander Donski v Fred Gil | 4-6,2-6 |
| ITF Portugal F10 | 2018/06/27 10:30 | Martim L Prata v Alexander Donski | 1-6,7-6,3-6 |
| ITF Portugal F10 | 2018/06/25 09:30 | Alexander Donski v Guilherme W Osorio | 2-6,7-5,6-4 |
| ITF Portugal F10 | 2018/06/24 12:00 | Alexander Donski v Illia Stoliar | 6-2,6-4 |
| ITF Portugal F9 | 2018/06/18 10:30 | Duarte Vale v Alexander Donski | 6-3,7-5 |
| ITF Portugal F14 | 2018/08/05 07:00 | Illia Stoliar v Eduardo Morais | 5-7,3-6 |
| ITF Portugal F13 | 2018/07/28 14:00 | Luke Jacob Gamble v Eduardo Morais | 6-2,6-0 |
| ITF Portugal F12 Qual | 2018/07/22 10:30 | Eduardo Morais v Antonio Cembellin Prieto | 1-6,3-6 |
| ITF Portugal F11 Qual | 2018/07/01 09:00 | Eduardo Morais v Guilherme Valdoleiros | 3-6,2-6 |